Steam-power plant for submarine boats



Jul 7, 1925.

' J. MUGL-ER ET AL STEAM POWER PLANT FOR SUBMARINE BOATS Original Filed Dec. -5; 1921 g sheets sheet 1 g INVENTQBS.

July 7, 1925.

2 Sheets-Sheet 3 Original Fi led Dec. 5, 1921 v 49/! ATTORNEY Patented July 7, 1925. 7

* UNITE-D sures, PATENT 7 OFFICE? JULIUS MUGLER, or BERLIL ND HERMANN wo'LKE, orBREMnN, GERMANY.

sTEAM-PowEn-rtarrg roe SUBMABINE'BOATS.

Original application filed December 3, 1921, Serial No. 519,607. Patent No. 1,511,902, dated October 14,

, 1924. Divided and this application filed S ptember 27, v1924v Serial lid-740,379.

To all whom it, may concern: Be 1t known that we, JULIUs MUGLER and HERMANN 6min, citizens of, Germany, re-

siding at Berlin, Germany, and Bremen, Germany, respectively, have invented cer tain new and useful Improvements in Steam-Power Plantsfor Submarine Boats,

of which the following is a specification."

This invention is vfor a submarine boat, and relates particularly to the construction and disposal of a steam power unit therefor, and is adivision of our. copending application Serial No. 519,607, filedDecember 8, 1921, now issued-as Patent. No. 1,511,902, dated October 14, 1924. I i The higher speeds obtainable fromsteam operated power plants for submarines over i the more common internal combustion engine type of power unit: is recognized by However, cons1dthose skilled in the art. erable difficulty is encountered in the disposition of the steam generators so as not to necessitate an increase in the overall lengthof the craft, or so as not to require additional room needed for-otherpurpose's Another source of difficulty is the insulation of heat and the protection of the crew from the effects of. heat radiating or conducted from th ge r o s The present invention has for its principal objects to provide a power unit in a'submarine vessel having a storage capacity for the conservation of steam for use in underwater cruising.

Another important object of the invention is to provide a novel arrangement of the steam generators with respect to the construction of the boat so as to reduce the interior space of the vessel occupied by the steam generators to a minimum, so that very little useful space is required for them, without reducing their size to a point where they are inefficient or uneconomical.

These and other objects and advantages are attainedby my invention, which is illustrated in the-accompanying drawings, all of which are diagrammatic views. In the drawings: 7 a v Fig. 1 is a transverse section through a submarine hull, but showing an end view of the high pressure generators and storage units;

Fig. 2 represents a longitudinal View through a portion of the ships hull, showpatent above referred to.

'removability of the generators from the housmgs in which they are contained;

' 'Fig, 3 is an enlarged View illustrating a longitudinal section through one ofthe high pressure boilers and v Fig. 41s, a front View thereof, showing a I portion of the front broken away.

In the drawings, 5 designates the outer shell of a submarine boatofaccepted design, within which is the inneroor pressure resisting hull 6, the latter being'in spaced relation totheformer, as explained in our @Intermediate the ends of the boat, preferably amidships thereof,,are steam generator or boiler rooms or compartments '7,

which are between theinner'and'outer hulls, I

the roomsprojecting laterally from the inner or pressure resisting hull. It is generally preferable to so shapethe inner hull I that the wall along the inside of the gen:

erator room will bulge or bow inwardly, as indicated at 8, thus occupying some of the space within the interior" of the hull. In each generatorvroom are one or more boilers7i. 1 i Forqgenerating steam for surface cruising, and for storing it for underwater cruising, specialrhigh pressure generators are employed. The generators, designated 7, are enclosed in a casing 13 surrounded by a second shell 14 which is spaced from the inner shell. Spaced outside this shell, is a casing 15 that may be common, in part, to the inner hull 6 of the vessel. The space 16 between shells let and 15 is preferably evacuated to provide heatinsulation.

The space 17 between shells 13 and 14 is a steam chamber which communicates with the steam generator 7 through a-pipe 18 in which is a'ma-nually operablevalve 19.

in the space 17, and having their opposite ends opening into the flue on opposite sides of the baffle.

In the event that the space 17 is not sufficient, and to increase the underwater cruising range, space 17, see Figs. 2andl, at the end otthe generator may be utilized'for steam storage;

Inoper-ation, where; steam is-used for-urn. derwater cruising, the steam flows through pipe 18 back into thegenerators, where it passes through the usual conduits, such as pipe23, to the turbines. necessary arrangement of pipes and valves, and simplifies the operation when making a changeover.

The compartments for the-high" pressure generators are spaced apart longitudinally, as shown-in Fig.- 2.1. The highpressure generator-units maybe provided with removable end plates 24:, so that; when necessary, the generator can berem oved from the. inner shell whenthe end-platens removed, and brought. into thespaoe between-the two generators, asshown in dotted lines-in Fig. 2, for repairs. j I

Any preferred type of boiler, per so, may be used. Fe have illustrated a water tube boilerhaving 1 cylindrical compartments 25 and water tubes 26.- p

Oil. is-preferably used' as a fuel, andin Fig- ,4, 27 designates-the endsofsuitable ;oi-l burners. p

The drawings; are -to;-b'e considered merely as illustrative of "the invention, andvar-ious details of construction and" arrangement" may beq modified w-ithiir the contemplation of the invention and undenthe scope of the appenc ed claims;-

e *claim as-our invention p 1. AA- steam power plant for submarines,- comprisinga high pressure water tube steamboiler for surface cruising, surroundedby a steam receiver for underwatercruising,

This simplifies the I insulating means surrounding the receiver, sald receiver hav ng pressure resistmgwalls separate from'those of the boiler, and a con- 7 trollablecommumcation between the boiler and thereceiyer V 2. A steam power plant for submarines comprising a high pressure water tube steam boiler for surface cruising, surrounded by a high pressure steam .receiver for. underwater cruising-heat insulatingrmeans surrounding the receiver, controllable communication between the boiler andthe re c-eiver, a connection-tothe-boiler by mea-ns of =whichsteam isdrawn from theboiler and the receiver, tubes mi said receiverthrough which the furnace gases are passed, and means-for directing turnaee gases from the boiler through the tubes.

3.. A submarine boat havmga steam .'power plant including-a high pressure generator, a higlrpressuresteam receiver surround ng the. generator having. pressure-t resisting. walls separate from; those ofrtheborler, a.

controllable communication; between the boiler and receiver, av flue, i and: passages in tionpass from the boilertothe zfi-uei 4.: A1; power. plant comprising. fa; double walledrcylindrical. casing between the walls of-=which1is -.a steam chamber, arwater tube.

boiler removably received within the casing,-

a-- pipe connecting the :boiler and; shell ..hav

ing a valve therein, and; a removable; end;

platedetachably secured ataonezendotzthe shell and entirely separatetherefrom; to.

In. testimony. whereof we afiix. our: signathe receiver through whlchgases ofcombuse- 

